package com.ai.common.advice;

import com.ai.annotation.IgnoreResponseAdvice;
import com.ai.common.CommonResponse;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * @ClassName 全局响应处理
 * @Description
 * @Author fenix
 * @Date 2023/3/19/019 16:09
 * @Version 1.0
 */

@RestControllerAdvice("com.ai")
public class CommonResponseDataAdvice implements ResponseBodyAdvice<Object> {


    /**
     * 判断是否需要对响应进行处理
     * @param methodParameter
     * @param aClass
     * @return
     */
    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        if (methodParameter.getDeclaringClass().isAnnotationPresent(IgnoreResponseAdvice.class))
            return false;
        if (methodParameter.getMethod().isAnnotationPresent(IgnoreResponseAdvice.class))
            return false;
        return true;
    }

    /**
     * 处理响应对象
     * @param o
     * @param methodParameter
     * @param mediaType
     * @param aClass
     * @param serverHttpRequest
     * @param serverHttpResponse
     * @return
     */
    @Override
    public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass,
                                  ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {

        // 定义最终的返回对象
        CommonResponse<Object> response = new CommonResponse<>(200, "SUCCESS");
        if (null == o) {
            return response;
        } else if (o instanceof CommonResponse) {
            response = (CommonResponse<Object>) o;
        } else {
            response.setData(o);
        }
        return response;
    }
}
